October 2026 Benchmark Results
Undetectable.ai
Third overall in October at 73.8, led by 83.4 for meaning preservation, alongside 80.7 for detector bypass and 71.6 for readability.
Scorecard
By detector
How Undetectable.ai performs against each detector we test.
| Detector | Score | Pass rate |
|---|---|---|
| Pangram | 76.3 | 76% |
| GPTZero | 83.4 | 83% |
| Originality.ai | 82.8 | 83% |
| Copyleaks | 80.1 | 80% |
| ZeroGPT | 81.0 | 81% |
At a glance
Undetectable.ai sits 1.8 points behind WriteHuman and 4.4 points ahead of Stealth Writer in the October overall ranking. Its strongest published component is meaning preservation at 83.4.
Where it stands out
The 83.4 meaning score ranks second among the 10 October tools, while its 71.6 readability score ranks third. That makes the writing-quality side of its result stronger than its fifth-place detector-bypass position.
Detector results
Undetectable.ai places fifth on all five detector-specific rankings. It scores 76.3 against Pangram, 83.4 against GPTZero, 82.8 against Originality.ai, 80.1 against Copyleaks and 81.0 against ZeroGPT.
Bottom line
Undetectable.ai is the strongest quality-led option in the October top three after GPTHuman. Its meaning and readability results are competitive, but users prioritizing detector performance should note its fifth-place position across the detector panel.
October 2026 results
The benchmark case for Undetectable.ai
The current cycle places Undetectable.ai third overall, with meaning preservation as its clearest strength.
Overall: 73.8
Ranked #3 of 10 tools, 4.4 points ahead of fourth place.
Detector bypass: 80.7
The fifth-highest detector-bypass result in the October overall table.
Meaning: 83.4
Ranked #2 among the 10 October tools for meaning preservation.
Readability: 71.6
Ranked #3 among the 10 October tools for readability.
Related research
Explore Humanizer Arena research
See separate experiments and the site methodology for additional context.